Hundreds of thousands of newborn babies will be tested for a devastating muscle wasting disease in a big win for the Mirror . Health Secretary Wes Streeting has brought forward plans to screen 400,000 babies in England for spinal muscular atrophy (SMA). Former Little Mix singer Jesy Nelson had raised awareness of how late diagnosis of her own twins meant they began treatment too late after irreversible nerve damage was done. She has been told they will never walk. The Mirror is campaigning for